![]() ![]() | ![]() |
usage string patchs by Guido Draheim
#define USAGE \ "\n" \ "\nTest switching the voltage signal high and low on a SAT frontend." \ "\n(Note: DiSEqC equipment ignores this after it has once seen a diseqc" \ "\n sequence; reload the driver or unplug/replug the SAT cable to reset.)" \ "\n" \ "\nusage: FRONTEND=/dev/dvb/adapterX/frontendX setvoltage {13|18}" \ "\n" #include <stdlib.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <sys/ioctl.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <linux/dvb/frontend.h> int main (int argc, char **argv) { char *fedev = "/dev/dvb/adapter0/frontend0"; int fd, r; if (argc != 2 || (strcmp(argv[1], "13") && strcmp(argv[1], "18"))) { fprintf (stderr, "usage: %s <13|18>\n" USAGE, argv[0]); return -1; } if (getenv("FRONTEND")) fedev = getenv("FRONTEND"); printf("setvoltage: using '%s'\n", fedev); if ((fd = open (fedev, O_RDWR)) < 0) perror ("open"); if (strcmp(argv[1], "13") == 0) r = ioctl (fd, FE_SET_VOLTAGE, SEC_VOLTAGE_13); else r = ioctl (fd, FE_SET_VOLTAGE, SEC_VOLTAGE_18); if (r == -1) perror ("ioctl FE_SET_VOLTAGE"); close (fd); return 0; }